I talked with the Head of the Physics Departement. He gave me the key to the room where the safe is located and granted me a formal permission to work on it. I would try to open it without damaging it… (not too much, at least).
I started taking some measurements of the diameters of the inner pins of the locks, of the outside diameters of the keys’ stems to fit the keyholes, and of the lenghts of the keys’ bits.
To do this I used some cork stopper piercer from my chemistry lab, a number of brass tubings, pieces from a car radio antenna and a caliper.